Line Geometry

This is an example for the line geometry

Output

#include "trase.hpp"
#include <fstream>

using namespace trase;

int main() {

  // create figure and axis
  auto fig = figure();
  auto ax = fig->axis();

  // create x and y vectors and set y = sin(x)
  const int n = 100;
  std::vector<float> x(n);
  std::vector<float> y(n);
  for (int i = 0; i < n; ++i) {
    x[i] = 6.28f * static_cast<float>(i) / n;
    y[i] = std::sin(x[i]);
  }

  // create a trase dataset and then plot it using a line geometry
  auto data = create_data().x(x).y(y);
  auto plt = ax->line(data);

  // label axis
  ax->xlabel("x");
  ax->ylabel("y");

  // output to chosen backend
#ifdef TRASE_EXAMPLES_SVG_BACKEND
  std::ofstream out;
  out.open("example_line.svg");
  BackendSVG backend(out);
  fig->draw(backend);
  out.close();
#endif
#ifdef TRASE_EXAMPLES_GL_BACKEND
  BackendGL backend;
  fig->show(backend);
#endif
}